前苏联专利SU803845A3 Herbicidic composition

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优先权

专利摘要:
The 4-(5-fluoromethyl-2-pyridyloxy)phenoxyalkanecarboxylic acids or their derivatives of formula (I), in which X, Y, R and Z<1> have the meaning mentioned in Claim 1, can be incorporated as active ingredients in herbicidal compositions, more particularly useful in agriculture and horticulture by virtue of their selective herbicidal activity with respect to graminaceous weeds. <IMAGE>
公开号:SU803845A3
申请号:SU782598652
申请日:1978-03-21
公开日:1981-02-07
发明作者:Нисияма Риузо；Хага Такахиро；Сакасита Нобуюки
申请人:Исихара Сангио Кайся Лтд (Фирма)；
IPC主号:

专利说明:

(54) HERBICIDE STRUCTURE
The invention relates to chemical agents for controlling weeds and undesirable vegetation, namely, a herbicidal composition containing an active substance from the group of aryloxyalkanoic carboxylic acid derivatives and auxiliary components from among liquid or solid carriers, surfactants, etc. Herbicidal compositions based on aryloxyalkancarboxylic acids and their derivatives are known. These include, for example, a composition based on 4- (3,5-d halopyridyl-2-hydroxy) phenoxyalkanecarboxylic acids and their derivatives 1, as well as a compound whose active substance is 4- 3-halo4-trifluoromethylphenoxy) phenoxypropionic acid and its derivatives However, the known herbicides of this type are not sufficiently effective for certain types of weeds and are not selective with respect to i cultivated plants. The purpose of the invention is a new herbicidal composition based on the aryloxyalkane carboxylic acid derivative, which has an increased herbicidal activity and improved selectivity of action. This goal is achieved by using an aryloxyalkanecarboxylic acid derivative of the general formula SRgH- / -0 OSI- (CHg) - - C-g as the active substance of the herbicidal composition; where X is fluorine or chlorine; Y is hydrogen or chlorine; R is hydrogen, methyl or ethyl; h O or 2; E - chlorine, hydroxyl; C -C4-alkoxy, 2-etoksietiloksi, 2,2,2-triftoretiloksi, 2,2,2-trihloretiloksi, cyclohexyloxy, metiltsiklogeksiloksi, 1-etoksikarbonilpropiloksi, ethoxycarbonylmethyloxy, phenoxy, methylphenoxy, chlorophenoxy, benzyloxy, glycidyloxy, allyloxy, propargyloxy, .lkiltio, phenylthio, chlorophenylthio, metilfenkltio, allylthio, amino, butylamino, anilino- or hloranilinogruppa, oksikarbonilmetils1minogruppa, etoksikarbonilmetilaminogruppa, pyridin-2-yl-amino groups or 0-cation in an amount of from 1 to 90 wt.%.
The herbicidal composition according to the invention has a pronounced selectivity of action with respect to cereal plants and, unlike most derivatives of aryloxyalkyl carboxylic acids, has a very moderate toxicity with respect to broadleaf plants.
Forms of application of the active substances are common: solutions, powders, paste emulsions, etc. They are prepared by public tricks.
The method of preparation of compounds of general formula 1 is based on the reaction of the corresponding 2-g of oid-5-fluoromethylpyridine with 4-hydroxyphenoxyalkanoic acid or its derivatives. They are also prepared by other available methods.
Below is a presentation of the compounds of the general formula 1 and examples illustrating the effectiveness of the composition according to the invention.
Example 1. Pre-emergence application. Experienced 1/30-meter dsgs are covered with soil to provide hilly conditions. Seeds of experimental plants are sown in the prepared soil, covered with soil, and two days after sowing, the plants are treated with aqueous dispersions of active substances. Evaluation of the herbicidal action was carried out 30 days after treatment according to the following scale:
2-9 intermediate values
1 - no effect
10 - full of death of plants.
The following plants are considered to be weed plants: Rosychka, chicken millet, bristles, etc.
The results of the experiments are presented in table. 2. Compound numbers correspond to the numbers in the table. one.
Example 2. Certain edible seeds of chicken and soya beans are sown in vessels with prepared soil and covered with a layer of soil about 1 cm thick. After the plant of an edible chicken project reaches the development stage, characterized by the appearance of 2.5 leaves, foliage is applied to the aqueous dispersion of the active substance in a predetermined amount. Twenty days after the treatment, a growth assessment of the growth of the plant for millet of chicken and soybeans was made, and the degree of growth inhibition was evaluated on the same scale as in Example 1. The results are shown in Table. 3
Example 3. Certain quantities of cotton seeds are sown in each of the growing vessels with an area of 1/50 m. When the cotton reaches the plant, a development stage corresponding to the appearance of four leaves,
0 .i it is sprayed with a certain amount of aqueous dispersion of the active substance.
Twenty days after treatment, a cotton plant is grown to assess the degree of phytoxicity. The degree of phytoxicity is assessed in terms of death, growth, and growth inhibition.
The results are shown in Table. 4. The degree of phytotoxicity is assessed on a 10-point scale, with 10 indicating complete inhibition of the cotton plant, and 1 indicating the absence of any phytotoxic effect. Example 4. Ordinary or creeping dust, obtained by dividing its related plant, having a diameter of about 10 cm, into two plants, is transplanted each separately into a 1/50 m vessel. After the plant reaches the stage of development, the appearance of 4.5 leaves ( 50-60 plants appeared, the plants height was 25-30 cm. They were sprayed with a certain amount of water dispersion of each of the compounds shown in Table. 5. After 50 days after treatment, a degree of overdamper powder is evaluated. The degree of overgrowth is shown in Table. 5, is rated on a b-scale, where 5 is the complete cessation of growth and 0 is the absence of inhibition of plant growth.
Example 5. Two underground stems (each 10–20 cm long) of puma (Johnson grass) containing 4–5 nodular growths, are each transplanted into a 1/50 m vessel. By. When the weed reaches the development stage with 4-5 leaves, the plants are sprayed with a predetermined amount of the aqueous dispersion of each of the compounds shown in Table. b. Approximately 40 days after treatment, the number of overgrown plants is determined.
26
Table 1
Allyloxy
Continued table. one
Chlorine
63
803845i 10
Continuation of table 1
1-Ethoxycarbonyl
table
eleven
80384512
Continued table. 2
13
25 50 25 50 25 50 25 50
. 25 50 25. 50 25 50 25 50 25 50 25 50 25 50 25 50 25 50 25 50 25 50
80384514
Continued table. 2
one
ten
ten
one
one
ten
ten
one
ten
one
ten
one
ten
one
one
ten
ten
one
ten
one
one
ten
ten
one
ten
one
ten
one
ten
one
ten
one
ten
one
ten .
one
ten
one
ten
one
ten
one
ten
one
ten
one
ten
one
ten
one
ten
d
ten
one
ten
one
ten
one
ten
one
803845
15
Continued table. 2
Continuation of Tg1bl. 2
80384520
nineteen
Table
21
- Methyl ester-4 (2,4-dichlorophenoxy) phenoxy) phenoxy propionic acid
- ethyl ester (4-acidopropylmethyl) phenyl hydroxyl 2-propanoic acid.
- ethyl ester С-4- (3,5-dichloropyridin-2-yloxy) phenoxy-propionic acid.
80384522
Continuation of table 3
Table 4
a b l and c a
1.25

权利要求:
Claims (2)
[1]
56 Claims of the invention A herbicidal composition containing an aryloxyalkanoic carboxylic acid derivative as an active substance and binding components, selected and solid or solid carrier groups, surfactants, characterized in that in order to enhance the herbicidal activity and improve selective action, it contains as an aryloxyalkanecarboxylic derivative acids compound of general formula -ODH- (CH, L, where X is fluorine or chlorine; Y is hydrogen or chlorine, R is hydrogen, methyl or ethyl h O or 2, Z is chlorine, hydroxyl, C-Cd-al
Tablat coxyl, 2-ethoxyethyloxy, 2,2,2-trifluoroethyloxy., 2,2, 2-trichloroethyloxy, cyclohexyloxy, methylcyclohexyloxy, 1-ethoxycarbonylpropyloxy, ethoxycarbonylmethyloxy, phenoxy, methylphenoxy, chlorophenoxy, benzyloxy, glycidylsyne, ase, and phenyloxy. C-alkylthio, phenylthio, chlorophenylthio, methylphenylthio, allylthio, amino, butylamino, anilino or chloroanilino, oxycarbonylmethylamino, ethoxycarbonylmethylamino, pyridin-2-amino, oxycarbonylmethylamino, ethoxycarbonylmethylamino, pyridin-2-amino, octoxycarbonylmethylaminogroup, pyrodine-2-amino, octoxycarbonylmethylaminogroup, pyrodin-2-amino, octocarbonylmethylaminogroup, oxycarbonylmethylaminogroup, ethoxycarbonylmethylaminogroup; Sources of information taken into account in the examination 1. USSR Patent No. 634640, cl. And 01 K1 9/24, 1974 (prototype).
[2]
2. The patent of Germany No. 2433067, cl. From 07 to 69/67, off 1976.

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引用文献:

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DE2223894C3|1972-05-17|1981-07-23|Hoechst Ag, 6000 Frankfurt|Herbicidal agents based on phenoxycarboxylic acid derivatives|

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DE2861073D1|1977-06-29|1981-12-03|Ciba Geigy Ag|Pyridyloxy-phenoxy-alkanoic acid derivatives , processes for their preparation and their use as herbicides or plant growth regulators|

CA1247625A|1977-07-22|1988-12-28|Howard Johnston|Trifluoromethyl pyridinyloxyphenoxy propanoic acidsand propanols and derivatives thereof and methods ofherbicidal use|

DE2862492D1|1977-08-12|1988-09-01|Ici Plc|Herbicidal halogenomethyl--pyridyloxy-phenoxy-alkanecarboxylic acids and derivatives, and processes of controlling unwanted plants therewith|

AU516691B2|1977-12-15|1981-06-18|Ciba-Geigy Ag|Pyridyloxy-phenoxy-propionic acid derivatives with herbicidal and plant growth regulating properties|CA1247625A|1977-07-22|1988-12-28|Howard Johnston|Trifluoromethyl pyridinyloxyphenoxy propanoic acidsand propanols and derivatives thereof and methods ofherbicidal use|

DE2862492D1|1977-08-12|1988-09-01|Ici Plc|Herbicidal halogenomethyl--pyridyloxy-phenoxy-alkanecarboxylic acids and derivatives, and processes of controlling unwanted plants therewith|

ZA784334B|1977-08-12|1979-07-25|Ici Ltd|Herbicidal pyridine compounds|

DE2755536A1|1977-12-13|1979-06-21|Ciba Geigy Ag|5'-Tri:fluoromethyl-2'-pyridyl-oxy-4-phenoxy propionic acid derivs. - are selective herbicides and plant growth regulators e.g. to control tobacco sucker growth|

EP0003648A3|1978-02-15|1979-09-05|Imperial Chemical Industries Plc|4-aryloxy-substituted phenoxypropionamide derivatives useful as herbicides, compositions containing them, and processes for making them|

WO1979000624A1|1978-02-15|1979-09-06|Ici Ltd|Herbicidal derivatives of 2-phenoxy)propane,processes for preparing them,and herbicidal compositions containing them|

GB2026865A|1978-03-01|1980-02-13|Ici Ltd|Herbicides|

DE2964580D1|1978-03-01|1983-03-03|Ici Plc|Herbicidal pyridine compounds and herbicidal compositions containing them|

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DD151037A5|1978-07-03|1981-09-30|Ciba Geigy Ag|HERBICIDES AND PLANT GROWTH REGULATING MEDIUM|

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US4935522A|1988-03-21|1990-06-19|Hoechst Celanese Corporation|Process for producing ethyl 2-[4'-phenoxy]propionate|

US4908476A|1988-03-21|1990-03-13|Hoechst Celanese Corporation|Synthesis of 2-alkanoic acids|

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

JP8663677A|JPS5840947B2|1977-07-21|1977-07-21|

AU86647/82A|AU574041B2|1977-07-21|1982-07-30|4phenoxyalkanecarboxylic acids|LV920585A| LV5094A3|1977-07-21|1992-12-30|Herbicide Composed|

MD940099A| MD14B1|1977-07-21|1994-04-21|Herbicidal composition|

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